Separable insulating earthen conduit.



W. B. GRAY.

SEPAR'ABDE INSULATING EAETHEN GONDUII'.

APPLIGATION FILED AUG. 22, 1913.

1,110,129. Peeeeeee Sept.8,19 14.

WITNESSES INVENTOR ///44 07M 6. Gavin a 6; FM

man/ms elegance @FFIQE WILLIAM BEALL GRAY, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO MARTIN J.

BANNON, OF LOUISVILLE, KENTUCKY.

To all whom, it may concern Be it known that I, WILLIAM B. GRAY, a citizen of the United States, and a resident of Louisville, in the county of Jefferson and State of Kentucky, have invented a new and useful Improvement in Separable Insulating Earthen Conduits, of which the following is a specification.

My invention is an improvement in separable insulating earthen conduits, and has for its object to provide a conduit of the character specified, which may be, after baking, separated into upper and lower sections, to permit the lower section to be laid in the excavation and to receive the pipes to be supported, and to afterward permit the up per section to be placed and permanently connected to the lower section, and wherein the conduit is so constructed that a plurality of independent pipes may be supported in the conduit alongside each other, the supporting mechanisms for the several pipes being also independent.

In the drawings :-Figure 1 is an end view of the improved conduit, and Figs. 2 and 3 are sections on the lines 2-2 and 3-3, respectively, of Fig. 1.

The present embodiment of the invention comprises a conduit 1 of elliptical form, the said conduit being made in sections of suitable length, each of the said sections having one of its ends annularly enlarged as indicated at 2. to receive the end of the adjacent section, whereby to form a continuous conduit.

Each of the said sections of conduit is intended and designed to be laid with its long axis horizontal, and with its short axis vertical, and each section of the conduit is provided at each end on its long axis with a pair of scores, recesses or grooves 3 and 4 respectively, the grooves or recesses 3 being on the inside of the conduit, while the grooves or recesses 4 are on the outside.

The grooves or recesses incline inwardly and downwardly as shown, and each of the said grooves or recesses gradually increases in width from its inner side toward its outer side. groove or recess 3, each section of the conduit is provided with a longitudinally ex"- tending reinforcing rib 5, at each groove or recess 4:, and below the same, eachsection of the conduit is provided with a longitudinally extending rib or ledge 6.

Specification of Letters Patent.

Application filed August 22, 1913.

At each side and above the adjacent SEPARABLE INSULATING EARTHEN GONDUIT.

Patented Sept. 8, 1914;

Serial No. 786,110.

The upper face of each of the ribs or ledges 6 is approximately horizontal, and the said rib or ledge is adapted to support a sealing medium, as for instance cement, concrete, or the like, the said sealing medium filling the grooves or recesses 4.

In use, before laying, the upper section is separated from the lower section by introducing a suitable tool, as for instance a chisel or the like, in the grooves 3 and 4, and forcin the sections away from each other tobreak the material of the conduit between the bottoms of the grooves or recesses 8 and 4.

After the pipes to be supported have been laid, the sections are replaced, each upper half of the sections being replaced on the lower section from which it has been originally removed, and a sealing medium is introduced into the grooves or recesses 3 and 41, the sealing medium outside of the conduit being supported by the ledge or ri-b (3.

Each section of the conduit is provided with. an internal longitudinally extending rib 7 at the lower end of its short axis, and each of the ribs 7 is provided on its upper face with a longitudinally extending groove or passage 8. At each side of the rib 7 the conduit is rovided with an internal rib 9, the said ri s being near the ends of the long axis, but in the lower half of the conduit, and the upper faces of the said ribs 9 are in the same plane, while the inner faces of the said ribs are parallel. Each of the said ribs or ledges 9 is provided with pairs of notches 10, the said pairs being ar-f its side wall slightly undercut, or they may be merely rounded notches, as may be desired.

. Preferably the notches have undercut side walls, or the said notches may be provided with grooves as shown in my copending application, Serial No. 782,661, filed August 2, 1913. The said rooves or notches 10 are for the purpose 0? receiving the supporting fingers of the cradles of the pipe supports, forming the subject-matter of my 00- pending applications, Serial No. 7 09,262, filed July 13, 1912', Serial No. 7 20,524, filed Sept. 16, 1912, Serial No. 765,282, filed May 3, 1913, and Serial No. 765,281, filed May/'3, 1913, and the notches have undercut side walls or grooves to receive a sealing medium being arranged on each side of the centralrib 7. When a pipe or series of pipes is supported oneach side of the said rib, the cradles are provided with a single set of supporting fingers, the inner ends or sides,

of the cradle having depending members en'- gaging in the grooves 8 0f the ribs 7, and

, the said ribis provided with transverse openings 11 below the bottom of the groove 8 for receiving a pin, bolt or the like, to lock or secure the inner sides or ends of the cradle to the said rib.

It will be noticed from an inspection of Fig. 3, that the notches 10 of the two ribs 9 register, each rib having the same number of notches as the other rib. The cradles however, (indicated in dotted lines in Fig. 3) are staggered with respect to each other, but the arrangement of the notches permits the arrangement of the cradles to be varied.

I claim:

1. Aconduit of the character specified of elliptical cross section, and adapted to be laid with its long axis approximately horizontal, said conduit having an internal longitudinal rib at the center of its lower side, said rib having a longitudinally extending groove in its upper face, said conduit having an internal longitudinally extending rib on each side of the central rib'and at a higher level, the upper faces of the said last-named ribs being in the same plane, and each of the last-named ribs having spaced pairs of notches, the notches of one rib registering with the notches of the other rib and the first rib having a transverse opening below the level of the bottom of the groove between each alternate pair of notches for the purpose specified.

2. A conduit of the character specified of elliptical cross section, and adapted to be laid with its long axis approximately horizontal, said conduit having an internal longitudinal rib at the center of its lower side, said rib having a longitudinally extending groove in its upper face, said con,- duit having an internal longitudinally extending rib on each side of the central rib and at a higher level, the upper faces of the said last-named ribs being in the same plane, and'each of the said last-named ribs having rib.

intense spaced pairs of notches, the notches of one rib registering with the notchesot the other 3. A conduit of the character specified of elliptical cross section, and adapted to be laid with its long axis approximately horizontal, said conduit having an internal Iongitudinal rib at the center of its lower side, said rib having a longitudinally extending groove in its upper face, said conduit having an internal longitudinally extending rib on each side of the central rib-and at a higher level, the upper faces of the said last-named ribs being inthe' same plane.

4. A conduit of the character specified having an elliptical cross section, ed to be laid with its long axis approximately horizontal, said conduit having-an internal longitudinally extending supporting rib near each end of its long axis and having a central supporting rib between the first-named ribs.

5. A conduit of the character specified having an elliptical cross section, and adapt and adapted to be laid with its long axis approximately horizontal said conduit having an internal longitudinally extending supporting rib near each end of its long axis and v having a central supporting rib between the first-named ribs, the central rib having a longitudinally extending groove in its upper face.

6. A conduit of the character specified having an elliptical cross section, and adapted to be laid with its long axis approximately horizontal, said conduit having an internal longitudinally extending supporting rib near each end of its long axis and having a central supporting rib between the first-named ribs, the central rib having a longitudinally extending groove in its upper face, and the lateral ribs having spaced notches in their upper faces, the notches of the ribs registering, and the central rib having the transverse opening intermediate each pair of notches.

7. A conduit of the character specified, having an internal central longitudinally extending supporting rib at its bottom and having an internal longitudinally extending supporting rib at each side of the firstnamed rib.

CHAs. F. TAYLon, L. A. THoMrsoN. 

